RiverFish

Roach · Rutilus rutilus

Roach in the West Drayton Mill side channel investigation

Largest measured roach: 23.4 cm

The largest roach measured in Environment Agency surveys of the West Drayton Mill side channel investigation was 23.4 cm, recorded at Top channel WDMSC on 3 July 2012.

Across 78 measured roach, the median measured length was 12.4 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the West Drayton Mill side channel investigation.

See roach records across England →

Most recent observation3 July 2012Top channel WDMSC · 59 fish
Largest measured roach
23.4 cm
Median length
12.4 cm
Fish measured
78
Survey locations
3

Individual EA measurements

Largest measured roach

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
23.4 cm3 Jul 2012Top channel WDMSC152348
21.7 cm3 Jul 2012Top channel WDMSC152348
21.6 cm3 Jul 2012Top channel WDMSC152348
20 cm3 Jul 2012Top channel WDMSC152348
19.6 cm3 Jul 2012Top channel WDMSC152348
19.6 cm3 Jul 2012Downstream weirpool WDMSC152346
19.5 cm3 Jul 2012Top channel WDMSC152348
18.2 cm3 Jul 2012Top channel WDMSC152348
17.6 cm3 Jul 2012Top channel WDMSC152348
17.6 cm3 Jul 2012Downstream weirpool WDMSC152346

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where roach were found

Each point marks a survey location with at least one roach record.

Choose a point on the map to see what was recorded there.

Map points are approximate and don’t show fishing access. Check local permissions before visiting.

Place surveyedFirst recordedLast recordedVisits finding roach
Weirpool WDMSC3 Jul 20123 Jul 20121
Top channel WDMSC3 Jul 20123 Jul 20121
Downstream weirpool WDMSC3 Jul 20123 Jul 20121

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

2012–2012

Survey records by year

Each bar shows how many survey visits recorded roach that year.

Fish measured by surveyors

Measured length distribution

See how the 78 measured fish were spread across different length ranges.

Smallest
5.8 cm
Lower quarter
11.5 cm
Median
12.5 cm
Upper quarter
15.2 cm
Largest
23.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the West Drayton Mill side channel investigation

Compare other species with enough survey and measurement data for a detailed page.

Chub Dace Perch Pike

Before you fish

Good to know

These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.

Learn how RiverFish uses the data →